Composition of matter for fireproofing and other purposes.



UNITED STATES PATEN GIUSEPPE' ANTONIO MESTUBAINO, OF TURIN, ITALY.

COMPOSITION OF MATTER FOR FIREPROOFING AND OTHER PURPOSES.

1,030,909, Specification of Letters Patent. Patented uly 2, 1912, HoDrawing. Serial No. 654,175

To all whm'n it may concern:

Be it known that I, GIUSEPPE ANTONIO Mnsronmo, a subject of the King ofItaly, residing at Turin, Italy, have invented certain new and usefulImprovements in Composition of Matter for Fireproofing and otherPurposes, of which the following is a specification.

This invention relates to a' composition of matter for fire-proofing andimpregnating such material as fabrics of artificial silk and othervegetable or animal fibers, paper articles,' or the like, Withoutaifecting the softness, resistance, and color of the goods treated.

In addition to its fire-proofing properties, the composition of thepresent invention possesses other valuable properties, as a result ofwhich the fabric or other material treatedis given new and desirableproperties and its stability and durability are materially increased.

The following is a specific example of the composition according to thepresent invention, the ingredients being indicated in the amounts whichhave been found to give particularly advantageous results:

Water 105 parts Ammonium phosphate. 7 7

Ammonium sulfate I 7.5

Ammonium carbonate- 2.5 .Boric acid 3 Dextrin 03 Aluminium hydroxid 3 JThe dextrin added increases the homogeneity of the mixture,.while theresence of the inorganic salts not only ser es fol" Application filedOctober 11, 1911.

increasingthe durability of the The content of aluminium 'hydroxid maybe varied or increased when heavier fabrics or thicker fibers or fabricsare to be impregnated.

In the case of thin paper articles it is advantageous to add to themixture a small quantity of gum, in order to impart the desiredconsistency to the paper.

In using the composition of the present invention the articles areimmersed or kept in the bath for 2040 minutes and then removed and driedby exposure to the air or in a drying apparatus, or. by other suitablemeans.

The composition of the present invention is free from any of thedisadvantages of known compositions containing the individualingredients indicated; and in addition it possesses valuable propertiesnot possessed by the individual constituents from which made up.

The proportions of the ingredients indicated may be somewhat varied butthe for mula given has been found, to give excellent results.

I claim:

1. A composition of matter comprising ammonium sulfate, ammoniumcarbonate, boric acid, ammonium phosphate, dextrin and aluminiumhydroxid, substantially as described. v

2. A composition of matter for fire-proofing and other purposescomprising the following ingredients in substantially the followingproportions:

parts Ammonium phosphate 7 Ammonium sulfate 7.5 Ammonium carbonate 2.5Boric acid 3 Dextrin 0.3 Aluminium'hydroxid 3 In. testimony whereof Iafiix my signature 1n presence of two witnesses.

GIUSEPPE ANTONIO MESTURINO.

Witnesses CARLO TORBAY, Gocr'unzn Gormnmn.

